Gas-washing.



H. A. BRASSERT L c. I. BACON..

GAS WASHING.

APPLICATION FILED 00T. 15. 191s.

Patented Ja11.5, 1915.

2 SHEETS-SHEET 1.

UW 1. lf

H. A. BRASSERT & C. J`. BACON.

GAS WASHING.

APPLICATION FILED 00115. 1913.

Patented' Jan. 5, 1915.

2 SHEETS-SHEET 2.

l mw iff ST ans c ric HERMANN A. BRASSERT AND CHARLES J'. BACON, OF CHICAGO, ILLINOIS.

GAS-WASI-IIN G.

Specification of Letters Patent.

Patented Jan. 5, 19115.

Application tiled October 15, 1913w SeriaLNo. 795,217. i

While our invention is particularly adaptx ed for use in connection with washing gas from blast furnaces, it may be used for cleaning gas of any description which contains mechanical impurities, such as soot, flue-dust, or the like.

Gas washing towers as-heretofore constructed have consisted chieiy of threeprincipal types: first, that in which a simple spray is used, there being no obstructions to thev passage of the water, with the possible eX- ceptionof a few' screens placed in the tower; second, those having a'series of baiiles in the tower, by which construction the water is caused to strike the balies in its downward horizontally disposed dish-like partitions areav v.

'path and the gas is forced to take a zig-zag course through the cascades of water which are formed by the baffles; and, third, they hurdle washers in which a large portion of the contents of the tower is filled with wooden hurdles, which offer a large surface to the water and gas. By striking these hurdles the particles of' water and gas are.

effectively broken up and become intimately ,miXed, with the result that the gas is cleansed from its impurities.

rihe disadvantage of the simple spray and the use of baffles' in gas cleaning towers is that it is diicult to prevent the gas and Water from channeling, .so that the gas passes through -the washer without coming intimately in contact with the water. rlhe hurdle washers, while securing a good miX- ture of the gas and water, have the disadvantage. of high. initial cost and also of offering a comparatively high resistance to the How of gas, so thatit is' generally necessary to 'employ-fans in order to propel the gas to its point ofconsumption., f

It is the object of ourfinvention'fto over' come all of the above-mentioned` dil'iiculties,

a gas vwashing tower in which-a plurality ofA used. These partitions are of two types: first, those having gas apertures around their peripheries,-and, second, those having the gas apertures through their centers. Each of the dishes is provided with a plu' rality of water apertures, which preferably consist of a series of minute concentric openings in the dish. The dishes of the two types alternate with each other in the tower so that the upwardly ascending gas rst passes through the'center of a dish, then through the downwardly falling water, and next through the peripheral'portion of the next higher dish. This action continues until the gas reaches the 'u per portion of the tower, where it is passe through a spiral in order to give it a rotary motion, so that the gas is forced to the outer wall of the tower and in this way is rid of the moisture which it mechanically entrains. I At the upper portion of the tower a suitable water inletr is prowater is removed by means of a Siphon, this water atthe same time forming a water seal at the bottom of the tower. It will be evident that by the use of this apparatus we accomplish a very efiicient cleaning of the gas, with a minimum cost for the original installation. rlhese and other-advantages of our invention will be more readily understood by reference to the accompanying drawings, in whichl Figure 1 is a -vertical longitudinal section through our improved gas washing tower; Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1; Fig. 3 is a horizontal section taken on the line 3-3 of Fig-l; and Fig. 4 is a fragmentary enlarged vertical section showing in detail a portion of the construction of the washing dish shown in Fig. 2.

The gaswashing tower of our invention consists of an outer casin 10 suitably supported on the pillars l1. he lower portion of this tower 1s formed into a water-receiving cone 12, at the bottom of which is the outlet Valve 13 controlled by the lever 1,4. Near the lower portion of the casing 10 is the gas inlet conduit 15, and the upper por tion ofthe 4casing is formed to receive the shown in Fig. A,1,proj'ects a substantial disn "l-.tane into the casing. rlhe casing 10 is pro;- `vided witha 'pluralitynof horizontally disposed washing dishes, `which are of two ,los

types, represented, respectively, by the dishes 17 "and 18. Each of theldishes 17 is provided with a central gas aperture 19, immediately adjacentto which is the upstandingsiange 20. Just outside of the ange 2O is the water plate 21, which is in the form of arring and has a plurality of concentrically arranged apertures 22. The sloping plate 23 incloses the water plate 21 and extends to the circular frame 24 which Y is fastened to the casing by bolts or other suitablev means.

Each of the dishes 18 `consists ofthe cir- 'cular frame 25 to which are fastened the cross-members 26, which, in turn, serve to support the water plate 27 having therein the concentric apertures 28. Just exterior to the water plate 27 is the upstanding flange 29. The central portion of the dish 18.43011- sists of the plates 30 which are formed into the shape of a cone 31. The water plates 21 and 27 -are arranged so that one water plate is substantially directly above another. In order to afford illumination inside of the tower an electric light 32 may be placed in each of the cones 31. l

The upper dish 33 of the washing tower is similar in construction to the dishes 17 with the'exce tion that it is provided with a flange 34 o a much greater height than theianges 20 of the dishes 17. The aperture 35 is formedby the flange 34. In

. this aperture is located the spiral 36, the

object of 'which is to ive the gas a rotary motion, as will be exp ained hereafter. Directly above the dish 33 is the water inlet 37. The water outlet'38 is in' the form of a Siphon having an end projecting into the cone 12, and serves to remove the water accumulating in said cone. A

If desired, our improved tower may be s equipped `with a ladder 39 and a plurality of platforms 40 located at different levels.

Peep-holes 41 may be provided in order to facilitate the inspection of the inside of the tower. j

Having thus described a preferred em- .Mbo'dment of ,the apparatus which we use,

th'e method of operation may now be readily understoodz` Before gas is allowed to passl fl'through the tower water is admitted through the inlet pipe 37.` This water is caught on the sloping plate- 23 and passes downwardly 5 to the water .plate ,21. ."The water then passes the form frofflnesspray through theconcentric. water apertures 22, and falls just Y inside ofthe flange 29 of the dish 1.8.-" The walter rises slightly in the dish `18, and then I passes-,downwardl 4'onto the*waterplate of t e nextlower ,dis '17,1-rom this point the water 'continues to pass downwardly through .thejsucce'ssive dishes 17 fand'lS untilA it ac; cumulates- 1n the 'cone-12,; from which it gas then be admitted through'the inlet vopening 15. This gas is forced to pass through the sprays descending from the lowermost dish Fromthis point the gas is again forced to the outer side of the circular spray of water and passes upwardly through the peripheral gas aperture 42 of the dish 18. The gas then again passes through the circular spray to the gas aperture 19 to the next higher dish 17, and sol-on vuntil it finally reaches the uppermost dish 33. In passing through the gas aperture 35 of the dish 33 the gas is given a rotary movement by means of the spiral 36, and is thrown outwardly against the casing 10 of the washing tower. This latter action -serves to free the gas from the moisture which is mechanically entrained with it. The gas finally passes out through they gas Voutlet pipe 16 to the upwardly through the' tower Yit gradually v becomes cooled and contracts, so that we preferably make the distance between the dishes progressively less toward the top `of the tower. i j

It will be appjarnt to those skilled the art that consideiable'change could be inade in the detailed'onstruction ofv the various parts which we have described without departing from the spirit or scope' ofy our invention. l

A Whatwe claim is: fr l 1. A gas washing tower, comprising the combination with a casing, of a plurality "of horizontally disposed dishes one above another, in sald easing, each of` said dishes having a water plate 'with aplurality of apertures therethrough and gme'ansfor di- .rectingr water to said plate," said directing vmeans--col'nprising inclined portions slant- "ing downward toward' the respective water plate, adjacent dishes zhaving''gas.apertures v in their` central portions and-around their peripher'ie's respectively, wherebyithejgas in passmg fronthejfgas a erture of'one dish to the gas-*aperture o LAan adjacent dish traverses the water owing through the apertures of the higher dish, substantially as described. Y l

V2.-A gaswashing tower, comprising the col'rrbiaton ofi-a1 easing, and a plurality of horizontallyydiff osed-dishes' one above Y'the other within sal-i' lcaSi'ng, each ofsaiddishes lhavingaf'water-plate with a plurality of -waterfaperturesthereim said water plates` being-arranged 1 so thatfpne isy substantially las Maaate directly above another, and adjacent dishes having gas apertures on opposite sides ot said water plates, whereby the gas in passing from the gas aperture of one dish to the gas aperture of an adjacent dish traverses the water flowing through the apertures of the higher dish, substantially as described.

3. A gas washing tower, comprising the combination of a casing, a plurality of horizontally disposed dishes one above the other within said casing, each of said dishes having a water plate with a plurality of water apertures therein, said water plates being arranged one above another, adjacent dishes having gas apertures on opposite sides of said water plates, whereby the gas in passing from the gas aperture of one dish to the gas aperture or an adjacent dish traverses the water flowing through the apertures of the higher dish, and means for imparting va rotary motion to said gas after its passage through said dishes, whereby said gas is brought into contact with said casing and freed from entrained moisture, substantially as described.

4. A gas washing tower, comprising the combination of a casing, a plurality of hori-y zontally disposed dishes one above the other within said casing, each of said dishes having a waterrplate with a plurality of water apertures therein, said water plates being arranged one substantially directly above another, adjacent dishes having gas apertures arranged interiorly and exteriorly of said water plates respectively, whereby the gas in passing from the gas aperture of one dish to the gas aperture of an adjacent dish v traverses the water flowing through the apertures of the higher dish, and .a spiral 1n the gas aperture ofthe uppermost of said dishes whereby the gas will be given a rotary motion and brought into contact with said casing, substantially as described.

5. A gas washing tower, comprising the combination of a casing, and a plurality of horizontally disposed dishes one above the other within said casing, earch of said dishes having an annular water plate with a plurality1 of concentrically arranged water apertures therein, said water plates being arranged one substantially directly above another and adjacent dishes having gas apertures arranged interiorly and exteriorly of said water plates respectively, whereby the gas in passing from the gas aperture of one dish to the gas aperture of an adjacent dish traverses the water flowing through the water apertures of the higher dish, substantially as described.

6. A gas washing tower, comprising a casing, a gas -inlet at the lower portion of said casing, a gas outlet at the upper portion of said casing, a plurality of horizontally disposed washing dishes within said casing, said dishes being arranged one above another and having water plates-with a plurality of apertures therethrough, said water plates being arranged one substantially above another, adjacent dishes having gas apertures therethrough on oppositev sides of said water plates, a water inlet at the upper portion of said tower, and means for removing the water collecting in the lower portion of said' tower, substantially as described.

HERMANN A. BRASSERT. CHARLES J. BACON.

Witnesses JOHN THORBURN, PAUL SoHRonDnR. 

